Mammography Cad Scheme
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Segmentação de imagens ultrassonográficas para detecção de nódulos / Segmentation of ultrasound images to detect nodules
Breast cancer is one of the main health problems of the female population and should be faced as an important public health care issue. The ultrasound scanning is considered the most effective in complementary method of breast diagnosis. Nevertheless, the acquisition format of this sort degrades the images in various ways, being the speckle noise of noticeab
Publicado em: 2010
-
2. A model of mammography image processing for microcalcifications clusters detection / Modelo de processamento de imagens mamográficas para detecção de agrupamentos de microcalcificações.
The main purpose of this project was to develop a new model for the detection of microcalcifications clusters for image processing in full mammograms. The model was subdivided in three stages being in the first accomplished a pre-processing for the improvement of the quality of the mammographic images through the removal of noise and contrast enlargement. In
Publicado em: 2009
-
3. Desenvolvimento de novas técnicas para redução de falso-positivo e definição automática de parâmetros em esquemas de diagnóstico auxiliado por computador em mamografia / Development of news technique for reduction of false-positive and automatic definition of parameters of mammograms for CAD schemes
This present work consists on the investigation of mammographic image characteristics for automatic determination of image processing parameters for a mammography computer aided diagnosis scheme (CAD) in order to get optimal performance. Additionally, using the results obtained on this first investigation, it was also developed a new technique for the reduct
Publicado em: 2007
-
4. Investigação do uso de imagens mamográficas adquiridas em diferentes digitalizadores no desempenho do processamento de imagens para detecção de microcalcificações / Investigation of the use of mammographic images digitized in different scanners for detection of clustered microcalcifications
This work is intended in comparing the results from a mammographic images processing scheme considering images sets digitized by a laser and by an optical scanners (Lumiscan50 and Umax Powerlook 1120 units, respectively). By means of a statistical analysis, we could verify that the optical scanner yields a remarkable increase in the digitized image intensity
Publicado em: 2006
-
5. Transfer function based methodology to preprocessing digital mammographic image and its application on computer-aided diagnosis schemes / Metodologia baseada nas funções de transferência para pré-processamento de imagens mamográficas digitais e sua aplicação em esquema computacional de auxílio ao diagnóstico
The purpose of this work is to evaluate the quality of radiological equipment and their images in order to use these evaluations to improve the performance of a computer-aided diagnosis (CAD) scheme. The mean idea is about the development of image processing techniques to enhance digital mammograms according to the characteristics of the X-ray unit used for
Publicado em: 2005